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Set Up the L2TP VPN Tunnel on the Apple MAC OS X 10.11 El
Capitan Operating System
To configure L2TP VPN in OS X 10.11 operation system, go to System Preferences...
> Network, click the "+" button at the bottom left of the connections to add a new
connection and configure as follows.
Set the Interface to be VPN, select VPN Type to be L2TP over IPSec.
Configure Service Name for you to identify the VPN configuration. Click Create.
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